Flex Ramp (RTI Ramp)

thingiverse

1/18 Flex Ramp or RTI (Ramp Travel Index) Ramp for RC crawlers. Requires 8x M2 screws to assembleI sanded my driving surface to make sure my tyres can grip itDrive up the ramp with either of your front wheels untill one wheel starts to lift off the ground. If your rear wheel starts to go up the ramp before this happens repostion your car so it runs along next to the ramp while your front wheel is still on the ramp.Measure from the hub down to the ramp surface (i used a white marker to put a line on the ramp).Then measure how far traveled from the base of the ramp to your hub measurmentthen divide the distance traveled by the wheelbase of the car and multiply it by 1000.For example a stock Trx-4m drove 80mm along the ramp and has a wheelbase of 163mm80 ÷ 163 × 1000 equales an RTI score of 49022.5° angle from the ground215mm long85mm tall at the endThe sides should match up with the ramp surface and they should sit 90° from the surface they sit on. The little cylinder is to go in the bottom corner to stabilise the sides.